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Metal Mine ›› 2016, Vol. 45 ›› Issue (05): 204-208.

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Beneficiation Recovery Experiment of Copper in a Certain Waste Smear of Qingyuan

Liu Sanjun1,Yao Wenming1,Yang Lili2,Zou Song3,Shen Li1,Wang Wei2,Yue Qi1   

  1. 1.School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;2.South China Institute of Environmental Sciences,Ministry of Environmental Protection,Guangzhou 510655,China;3.Changsha Design and Research Institute,Ministry of Chemical Industry,Changsha 410117,China
  • Online:2016-05-13 Published:2016-08-18

Abstract: A certain waste smear factory in Qingyuan City contains copper elemental and alloys of copper,iron,lead,zinc,antimony and tin,these metals are most tiny and granular or linear wrapped in plastics and rubber.In order to fully recovered these metals,copper recovery index comparison by using gravity separation,flotation,eddy current separation and electrostatic separation were conducted based on the comparison of the effect of ball mill,vibrations mill and cutting crusher for smashing smear and peeling metals.The results show that:cutting crusher is better at smashing and peeling;electrostatic separation is easier to obtain a good separation performance;copper concentrate with copper grade of 52.72%,the total metallic element content nearly 90%,the recovery of copper is 78.31% and the content of carbon and sulfur is relatively lower can be obtained by two roughing and one cleaning electrostatic separation process.The cutting crushing-screening-electrostatic separation is an efficient recovery process for valuable metal in waste smear,which not only has good economic benefits,but also has significant social benefits.

Key words: Waste smear, Copper elemental, Copper alloy, Cutting comminution, Electrostatic separation, Benefit analysis